User reports issue with file download

The users asked the app to summarize the issue, this is what it said:

Chronological sequence of events:

First attempt (PDF): At the user's request, I created a PDF file containing a summary of the exercises. When attempting to open the generated link, the user received an error message.

Second attempt (PDF): Assuming it was an isolated error, I created a completely new PDF file. The result was identical; this link also led to the same error message.

Third attempt (Word document): As an alternative, we suggested a Word document (.docx). I created the file, but unfortunately the exact same error occurred here as well. The user was unable to download the file.

Detailed error description:

The user was kind enough to send a screenshot of the error message. It is an XML error page storage.googleapis.com with the following content:

Code: AccessDenied

Message: Access denied.

Details: Anonymous caller does not have storage.objects.get access to the Google Cloud Storage object. Permission ‘storage.objects.get’ denied on resource (or it may not exist).

Analysis and interpretation of the error:

Essentially, this means that the files I created on Google Cloud Storage are not correctly shared for anonymous (public) download. This appears to be a general permission issue in the system configuration that prevents users from accessing the generated files.